Insulated trolley-crossing.



F. C. HORNSTEIN.

INSULATED TROLLEY CROSSI APPLICATION FILED MAR.6, 1911.

1,105,662. Patented Aug. 4, 1914,

3 SHEETSSHEET 1.

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[/VVE/V TOR. Frederick (J. HornsTein,

A TTORNEY.

P. O. HORNSTBIN. INSULATED TROLLEY CROSSING.

APPLICATION FILED MAR. s, 1911.

Patented Aug. 4, 1914,

3 SHBETS' SHEET 2.

INVENTOR.

A TTORNEY.

F. C. HORNSTEIN.

INSULATED TROLLEY CROSSING.

APPLICATION YILED MAR.6,1911.

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UNITED STATES PATENT QFFICE.

FREDRICK C. HORNSTEIN, OF INDIANAPOLIS, INDIANA.

INSULATED TROLLEY-CROSSING.

To all whom it may concern:

Be it known that I, FREDRICK C. HORN- STEIN, of Indianapolis, county of Marion, and State of Indiana, have invented a certain useful Insulated Trolley-Crossing; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawin s.

lhe object of this invention is to improve the construction of trolley wire crossings for electric railway lines.

An important feature is the arrangement of the crossing members so that they can be very quickly put together or separated.

The nature of the invention will be understood from the accompanying drawings and the following description and claim.

In the drawings Figure 1 is a plan view of the crossing. Fig. 2 is the bottom View thereof. Fig. 3 is a central longitudinal section through the device. Fig. 4 is a section on the line H of Fig. 3. Fig. 5 is a section on the line 55 of Fig. 3. Fig. 6 is a section on the line 66 of Fig. 3. Fig. 7 is a section on the line 77 of Fig. 3. Fig. 8 is a bottom View of one member of the crossing shown on a larger scale. Fig. 9 is a longitudinal vertical section on the line 99 of Fig. 8. Fig. 10 is a transverse section on the line 1010 of Fig. 9. Fig. 11 is a section on the line 11-11 of Fig. 8.

In detail, 10 represents one trolley wire and 11 the other crossing trolley wire. The wire 10 runs over a long bridge 12 made of insulating material made of wood or fiber. The wire 10 and said bridge 12 are secured together by the metal frame 13 at each end of the bridge, which, as shown in Fig. 5, is secured to the bridge by a bolt 14 passing through two lateral cars 15. There is a shoulder 16 on the metal piece 13 which abuts against the end of the bridge 12, and a clamp 17 is secured to the metal piece I3 by screws 18 and overlaps the trolley wire 10. There is also an approach 19 which is secured to the extreme ends of the metal pieces 13 by bolts 20 and which approaches surround the trolley wire.

The bridge 12 is centrally cut away on its underside at 22, as shown in Fig. 3, and adjacent said recess 22, at each side, a metal clip 23 is secured with a projecting finger 24 spaced away from the bridge so as to receive a metal disk 35 of the crossing frame 26 for the trolley wire 11. The disk is provided Specification of Letters Patent.

Application filed March 6, 1911.

Patented Aug. 4, 1914.

Serial No. 612,555.

with notches or recesses 27 at diametrically opposite points to enable the disk to be slipped over the fingers 24, and then the disk is turned somewhat and is held between the fingers 24 and, the bridge 12. The trolley wire 11 runs over the metal crossing frame 26 and it is provided with approaches 28 secured by screws 29 similar to the approaches 19.

There is insulation 30 between the metal pieces 13 and 23, which are secured to the bridge 12 for the purpose of electrically separating them as the former is attached to the trolley wire 10, while the latter is electrically connected with the trolley wire 11, after the parts are in place. In the particular construction shown in Fig. 3 the part 30 is a strip of wood held in place at each end by little metal bands 31 which are secured by a bolt 32 to the lateral extensions from the metal piece 13, as shown in Fig. 5. When the bridge 12 and the insulating strip 13 are made of wood, it is desirable that a plate of fiber or other insulating material 33 be located betweenv them so as to protect the bottom surface of the woo-den bridge 12 from the arcing sparks as the trolley wheel passes over the strips 30. As shown in Fig. 7, the outer ends of the metal pieces 13 are provided with a central depression for the trolley wire 10 and the clamp 17 has a central extension 34.- Which enters said depression for clamping the wire therein. It is, therefore, apparent that the two members of this crossing may be very quickly separated and as quickly united. All that is necessary is to turn the two members somewhat with rela tion to each other so that the lower member will be disengaged from the fingers 24 of the upper member, and the opposite operation will unite them.

The disk 35 of the lower member has a recessed upper surface in which the wire 11 extends or lies. The ends of said crossing frame 26 are also provided with a longitudinal recess 126 for said wire, substantially as indicated in Figs. 8, 9 and 11; and said frame is reinforced by vertical extensions or ribs 226 on each side, whereby it will stand the great strain to which it is subject.

I claim as my invention:

A trolley wire crossing including a pair of crossing trolley wires, a bridge-piece made of insulating material longitudinally over to said metal pieces, a pair of metal pieces gers and the body of said bridge and having secured to said bridge near the middle thereoppositely located notches whereby it may of With fingers projecting toward each other be readily put in place or removed.

and spaced apart from the body of the In Witness whereof, I have hereunto affixed bridge, insulating strips between the metal my signature in the presence of the Witnesses pieces at the end of the bridge and the metal herein named.

pieces near the middle of the bridge, a metal FREDRICK C. HORNSTEIN. crossing frame secured to the other trolley Vitnesses: Wire and provided near its center With a disk G. H. BOINK,

10 adapted to fit in the space between said fin- J. H. WELLS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 0! Patents, Washington, I). G." 

